Hoisting-drum.



N. C. MILLER.

HOISTING DRUM. APPLICATION FILED MAY 25, 1911.

I Patented Mar. 5, 1912.

2 SHEETS-SHEET 1.

N. G. MILLER.

HOISTING DRUM.

' APPLIOATION FILED MAY 25, 1911. l ,01 9,269.

2 SHEETS-SHEET 2.

J3 14' a/ 64 grf i Li ,9 1? J2: 49 -16 6 5 :1.

Patented Mar. 5, 1912.

NICHOLAS C. MILLER, 01? DODGEVILLE, WISCONSIN.

HOIS'IING-DRUM.

Specification of Letters Patent.

Patented Mar. 5, 1912.

Application filed May 25,1911. Serial No. 629,454.

To all whom it may concern:

Be it known that I, NICHOLAS O. MILLER, a citizen of the United States,residing at Dodgeville, in the county of Iowa and State of Wisconsin,have invented a new and useful Hoisting-Drum, of which the following isa specification.

. The invention relates to improvements in hoisting drums, and is adivision in part of an application, filed by me on or about Jan. 31,1911, Serial No. 605,824..

The object of the present invention is to improve the construction ofhoisting drums, and to provide a hoisting drum equipped with guards orfingers for keeping the hoisting rope from the heads of the drum, andprovided with means adapted to prevent the drum when released from theactuating means by a clutch from rotating rapidly and unwindingexcessive slack.

With these and other objects in view, the invention consists in theconstruction and novel combination of parts hereinafter fully described,illustrated in the accompanying drawings, and pointed out in the claimshereto appended; it being understood that various changes in the form,proport on, size and minor details of construction, wlthin the scope ofthe claims, may be resorted to without departing from the spirit orsacrificing any of the advantages of the 1nvention.

In the drawings :-Figure 1 is a plan vlew of a hoisting drum,constructed in accordance with this invention. Fig. 2 is a vertlcalsectional view on the line 2-2 of Fig. 1. Fig. 3 is a vertical sectionalview on the line 3-3 of Fig. 1. Fig. 4 is a vertical sectional view onthe line 44 of Fig. 1.

Like numerals of reference designate corresponding parts in all thefigures of the drawings.

In the accompanying drawings in whlch is illustrated the preferredembodiment of the invention, 6 designates a hoisting rope, extendingfrom a hoisting drum 10, which is designed to be actuated by a gasoleneengine, or other suitable motor (not shown). The hoisting drum 10 ismounted on a transverse shaft 14, journaled in suitable bearings 15 of asupporting frame 16. The supporting frame 16, which is rectangular, maybe constructed of any suitable material, and the hoisting drum consistsofa cylinder and terminal heads 17 and 18. The cylinder,

which is preferably constructed of steel, is connected at its ends toflanges 19, preferably cast integral with the heads 17 and 18 andextending into and fitting against the inner face of the cylinder andsecured thereto by screws 19*, or other suitable fastening devices. Theheads 17 and 18 are also connected by longitudinal rods 12 extendingfrom one end of the drum to the other and located within the cylinderand piercing the heads 17 and 18. The rods 12 are provided at one endwith suitable heads and are threaded at the other end for the receptionof nuts 13. The drum may be of any other preferred construction, and theheads are provided with alined bearing openings to re ceive thetransverse shaft 14. The head 17 of the drum is equipped with a hook 17for attaching one end of the hoisting rope to the drum. The hook 17which is de tachable, has its shank extended through the head 17 of thedrum, and it is secured in an opening in the outer portion of the head17 by a key 17 or other suitable fastening means. One end of thetransverse shaft 14 is connected by spur gearing 20 with a countor-shaft22, journaled in suit-able bearings 15 of the frame 16 and equipped atthe opposite side thereof with a pulley 23. The pulley 23 is connectedby a belt 2 1 with the driving pulley of the said engine or motor. Whenthe engine or motor is in operation, the transverse shaft 1 1 iscontinuously rotated, and motion is communicated to the drum by a clutch25, forming the subjectmatter of the aforesaid application, and havingmeans for engaging an annular rim or flange 26, which projects from thehead 18 of the drum 10.

The clutch mechanism and the gearing are protected by curved guards 57and 58 of approximately semicylindrical form, constructed of sheetmetal, or other suitable material and extending across the frame 16 andhaving angularly bent terminals 59 and 60, which are bolted or otherwisesecured to the opposite sides of the frame 16. The guards protect theparts from dust and the weather and prevent the clutch mechanism fromgetting wet, and they also eliminate all danger and prevent theaccidents, which frequently result from unprotected gearing and othermovable parts.

The hoisting rope 6 is arranged between curved fenders or guards 61,arching the drum adjacent to the heads 17 and 18 and secured at theirterminals 62 and 63, respectively, to the guards or shields 57 and 58 atone side of the frame and to the projecting bars 64 at the opposite sideof the frame. The ends 62 of the fenders are fitted against the upperfaces of the adjacent terminals of the guards or shields, and the otherends 63 are bent inwardly and are secured to the lower faces of theouter inclined portions 65 of the bars 64. The inclined portions 65 ofthe bars 64 are connected by a bar or brace 66, which is extended toform a support for brackets or castings 51 and 52 of the inner and outerguide pulleys 53 and 54. The outer inclined portions 65 of the bars 64extend downwardly and outwardly from the frame, and they set the guidepulleys at an inclination to center the clutch operating rope 50. Theextended portion of the bar 66 is preferably supported by a bar 67,secured to the frame and having an inclined portion similar to the bars64 and arranged in parallelism with the same.

The drum 10 is equipped with an interior eccentrically arranged weight68, preferably consisting of a bar of metal, extending 1ongitudinally ofthe cylindrical portion of the drum and secured to the inner face of thesaid cylindrical portion by rivets 69, or other suitable fasteningmeans, and terminating short of the heads of the drum. When the drum isrelatively small, it is also equipped with an exterior eccentricallyarranged weight of arcuate form and curved to conform to theconfiguration of the annular flange or rim 26 to which it is secured bybolts 71. The curved weight 70 has concave and convex faces to fit theexterior and interior of the annular rim, and it is reversible and isadapted to be transferred from the inner to the outer face of the annular flange 26, according as the clutch mechanism is arranged to engagethe outer or inner face of the said annular rim or flange. Theeccentrically arranged weights are adapted when the drum is released bythe clutch to prevent the said drum from rapidly rotating and unwindingan excessive amount of slack. The weights 68 and 70 will permit the drumto rotate freely when there is a pulling strain on the hoisting rope. Inlarge drums where the weight 68 is located a considerable distance fromthe shaft 14, the said weight 68 will be sufficient to prevent freerotary movement of the drum, but in the smaller class of drums,

the interiorly arranged weight is located too close to the shaft 14 toact quickly, and it would be impossible to obtain the desired eccentricaction or over-balance without making the weight within the cylinderbulky and heavy. Therefore, in the smaller class of cylinders, thecurved weight is applied to the annular rim or flange 26 withoutincreasing the size or weight within the cylinder. The addition of theweight 70 to the rim gives the desired over-balance, and adds but littleweight to the machine. The weight 70 is preferably provided with slots72 to accommodate the bolts 71, when the weight 7 O is arranged eitherat the inner or outer face of the annular flange or rim 26.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent, is

1. The combination with a motor driven shaft, of a loose drum, clutchmechanism for connecting the drum with the motor driven shaft, and aneccentrically arranged weight carried by the drum for preventing freerotary movement thereof when the drum is released by the clutchmechanism.

2. The combination with a motor driven shaft, of a hollow drum, clutchmechanism for connecting the drum with the motor driven shaft, and aweight secured eccentrically within the drum and adapted to prevent freerotary movement thereof when the drum is released by the clutch.

3. The combination of a drum, a hoisting rope extending from the drumand adapted to be wound around the same, and arched fenders extendingover the end portions of the drum and arranged to keep the hoisting ropefrom the ends of the drum.

4. The combination of a frame, a shaft mounted on the frame, a drumloose on the shaft, gearing at one end of the drum for rotating theshaft, clutch mechanism located at the other end of the drum, spacedshields mounted on the frame and extending over the gearing and theclutch mechanism, bars projecting from one side of the frame and havinginclined portions, and fenders arched over the end portions of the drumand supported at one end by the shields and at the other end by theinclined portions of the projecting bars.

5. The combination of a frame, a hoisting drum provided at its ends withheads and mounted within the frame, a hoisting rope connected with andadapted to be wound around the drum, and arched fenders extending acrossand secured at their terminals to the frame and located above the headsof the drum and adapted to keep the hoisting rope away from the same.

6. The combination with a hollow hoisting drum comprising a cylinder,and heads connected with the ends of the cylinder, of an eccentricallyarranged weight extending along the inner face of the cylinder andsecured to the same to prevent free rotar movement of the drum when thelatter is loose. V

7. The combination with a motor driven shaft, of a loose drum having anannular rim, clutch mechanism for engaging the rim to connect the drumwith the motor driven shaft, and an eccentrically arranged weightsecured to the rim for preventing free rotary movement of the drum.

8. The combination with a motor driven shaft, of a loose drum having anannular rim, clutch mechanism for engaging the rim to connect the drumwith the motor driven shaft, and an eccentrically arranged weightdetachably secured to the rim and having curved faces to fit the innerand outer faces of the rim.

9. The combination of a hollow hoisting drum comprising a cylinder andheads and provided with an annular rim, an interior eccentricallyarranged weight secured to and extending along the inner face of thecylinder, and a reversible exterior weight secured to the rim and havingcurved faces to fit the inner and outer faces of the said rim.

In testimony that I claim the foregoing as my own, I have hereto aflixedmy signature in the presence of two witnesses.

NICHOLAS O. MILLER.

Witnesses:

D. H. WILLIAMs, A. L. CoBBms.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

